The point at which a child becomes an adolescent is defined by the onset of puberty or by the beginning of the teenage stage. Adolescence is also viewed as ending with the teenage stage. However, in some individuals (particularly females), puberty begins in the preadolescence years.
Grundy County, Illinois. Grundy County is a county located in the U.S. state of Illinois. According to the 2010 census, it has a population of 50,063. Its county seat is Morris. Grundy County is part of the Chicago-Naperville-Elgin, IL-IN-WI Metropolitan Statistical Area.
During the second half of the twentieth century the population of Bexar County grew rapidly. According to the 1940 census the county had a population of 333,176; in 1960 it had reached 687,151; in 1980 it was 988,800; and in 1990 for the first time it topped the one million mark.